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Ministers want to introduce a first low emission zone (LEZ), probably in Glasgow, as early as the end of next year, from which vehicles with all but the cleanest engines could be banned.
Motoring groups estimated on Wednesday, when the measure was announced, that it could affect three-quarters of diesel cars and one in six petrol engines.
In fact, I was then reminded of research by Leeds University this year which showed that as many as half of all current cars potentially face being banned from Glasgow, Edinburgh, Aberdeen and Dundee, where LEZs are due to be established by 2020.
That’s more than 80,000 in each of the two largest cities alone - and some two-thirds of their taxis fleets are also non-compliant.
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http://www.scotsman.com/news/opinion/alastair-dalton-tough-vehicle-restrictions-better-for-all-1-4553990/amp